(19)

(11)

EP 3 161 221 A1

(12)

(43) Date of publication: 03.05.2017 Bulletin 2017/18 (21) Application number: 15812856.1 (22) Date of filing: 15.04.2015

(51) International Patent Classification (IPC):  E04B 7/08(2006.01) (86) International application number: PCT/CN2015/076624 (87) International publication number: WO 2015/196846 (30.12.2015 Gazette 2015/52)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA (30) Priority: 25.06.2014 US 201414314552 (71) Applicant: Sun, Xiaoping Jiangsu 224000 (CN)	(72) Inventor: Sun, Xiaoping Jiangsu 224000 (CN) (74) Representative: Beck Greener  Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)